razborov_flag_algebras

Compute lower bounds on subgraph densities using Razborov's flag algebra method.

1|Updated Mar 14, 2026
One-click install
npx skills add https://github.com/bneb/perqed --skill razborov-flag-algebras
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: razborov_flag_algebras
Source: https://github.com/bneb/perqed/tree/main/.agents/skills/razborov_flag_algebras
Command: npx skills add https://github.com/bneb/perqed --skill razborov-flag-algebras

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

Flag algebras convert finite subgraph counting into density-based inequalities that yield asymptotic bounds for Ramsey multiplicity and related extremal questions.

Core Features & Use Cases

  • SDP-backed density certificates for graph limits
  • Lean 4 certificate generation and verification
  • Asymptotic bounds for Ramsey-type problems using flag algebra framework
  • Works with graphon densities t(F;W) and SOS-type certificates

Quick Start

Run the guided workflow to produce a formal Lean certificate for your target density bound.

Frequently Asked Questions about razborov_flag_algebras

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I compute lower bounds on subgraph densities using flag algebras?▼

You compute asymptotic density bounds by converting finite subgraph counts into density inequalities, then verifying them with an SDP-based PSD matrix approach and a Lean 4 certificate workflow. This method targets extremal combinatorics problems where finite search stalls.

What is the best way to prove limits for Ramsey multiplicity in extremal combinatorics?▼

The best way to prove limits for Ramsey multiplicity is applying flag algebra frameworks that yield asymptotic bounds. This method generates SOS-type certificates for graphon densities t(F;W) to resolve Ramsey-type problems when finite graph enumeration stalls.

Do I need Lean 4 to verify semi-definite programming density certificates for graphons?▼

Yes, you need Lean 4 to verify semi-definite programming density certificates for graphons. The workflow requires a Lean 4 certificate generation and verification step to formally validate the SDP-backed PSD matrix approach for your target density bound.

Can I use flag algebras with type sigma flags and finite graph enumeration for graph density problems?▼

Yes, you can use flag algebras with type sigma flags and finite graph enumeration to solve graph density problems. The framework processes t(F;W) densities and finite subgraph counts to derive asymptotic bounds for extremal combinatorics questions.

Why does finite graph search stall when deriving Ramsey multiplicity bounds, and how do flag algebras help?▼

Finite graph search stalls when deriving Ramsey multiplicity bounds because exhaustive enumeration cannot scale to asymptotic limits. Flag algebras help by converting finite subgraph counting into density-based inequalities solved via semi-definite programming.